Connection error couldn’t connect to O&O Defrag Agent

In running the TCP Port 50300 I am getting an error message which if translated looks like the following,
Network error or -warning occurred
Connection error
couldn’t connect to O&O Defrag Agent. Maybe the O&O defrag-service isn't started.
This can be started via windows service management console.
Data incorrect.”

I have already tried almost every possible methods like uninstalling and reinstalling. But no method worked.
I need help.
Please help me to solve this.
